I was just about to make a smart-arse comment about comparing onions to onions, when I had another look (and measured again).
The green band is indeed a part of the tread (rather than the carcass) and measures the same on the 25mm.
Not sure what the band offers in the way of grip, but I suppose it does afford more protection to the sidewall, compared to OC.
Quite likely to offer more protection.
@edscoble started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I was just about to make a smart-arse comment about comparing onions to onions, when I had another look (and measured again).
The green band is indeed a part of the tread (rather than the carcass) and measures the same on the 25mm.
Not sure what the band offers in the way of grip, but I suppose it does afford more protection to the sidewall, compared to OC.